There are a variety of 38 cal WCs out there, 148gr swaged HBWC BHN around 6 to 8, 148gr swaged BBWC BHN around 6-8 the BBWC can be pushed harder.
And then we have the the cast WC BHN 12-15ish they are mostly found in the DEWC or BNWC configurations I prefer the latter.
These 148gr BNWC with a BHN of 15 can pushed much harder than the swaged HBWC as used for target loads, so when I think of the 38spl snubnose loaded with WCs it may be a different animal.